JP4901322B2 - Residual gas discharge structure of aerosol container - Google Patents

Description

  The present invention relates to an improvement in a residual gas discharge structure of an aerosol container in which a target component is injected by a propellant (gas).

  Aerosol products such as spray cans release liquid and fine powder target components sealed in a pressure-resistant container together with propellant such as vaporized liquefied gas or compressed gas in the form of mist or foam by the pressure of the propellant Is. Since such an aerosol product often uses a combustible gas as the propellant, if the aerosol product is discarded while the gas remains, the container may explode. For this reason, after the target component is used up, the container is degassed before disposal. Even if the target component cannot be used up unavoidably, it is necessary to discharge all the contents including the target component and the propellant and then discard them.

Conventionally, as a method for venting aerosol products, there is a method in which a hole is formed in a container or an internal gas is discharged by continuously pressing a stem via a pressing member (button, lever, etc.). As a technique for continuously pressing the stem, there are techniques shown in the following Patent Documents 1 to 3, for example. Patent Documents 1 and 2 disclose techniques for discharging contents using a lid of an aerosol container. Patent Document 3 discloses that the degassing mode is set by a bendable leg provided on an operation button fitted to the stem.
JP 2001-158487 A JP 2001-55284 A JP 2006-27718 A

  However, the above background art has the following disadvantages. First, in the techniques described in Patent Documents 1 and 2 below, since it is necessary to prepare a lid for maintaining the ejection state of the ejection head part and the button as a separate body, the number of parts increases and the manufacturing process becomes complicated. There is an inconvenience of becoming. In particular, in Patent Document 1, it is necessary to perform alignment such as removing the nozzle of the ejection head portion to expose the stem and covering the tip with a fitting portion inside the lid, and thus the residual gas discharge operation is simple. Is not good. Further, in the technique described in Patent Document 3, since the tip of the bent leg portion of the operation button is brought into contact with the receiving portion of the cover body, it is impossible to return from the residual gas discharge mode. There is an inconvenience that the original state cannot be restored when the residual gas discharge mode is set.

  The present invention pays attention to the above points, and the purpose thereof is to easily discharge the total amount of residual gas in the aerosol container with a simple configuration, and to easily return from the residual gas discharge state. It is an object to provide a residual gas discharge structure of an aerosol container.

In order to achieve the above object, an aerosol container residual gas discharge structure according to the present invention is fixed to an upper part of an aerosol container and has a cover body having a pair of opposing side surfaces, and is disposed between a pair of side surfaces of the cover body. , are connected via a leaf spring portion against the rear side of the cover body, a swingable connection of its fulcrum, injection means for injecting the contents of the aerosol container, the cover body And an operation means having a trigger attached to the injection means and depressing the injection means, a shaft portion detachably held by a receiving portion provided on the cover body, and a discharge position of the residual gas in the aerosol container Rutotomoni comprising a locking means having a fitted capable inserting portion into the gap occurring between the rear and the cover body is injection means, said gap, characterized in that the plate spring portion is partially open To. The above and other objects, features and advantages of the present invention will become apparent from the following detailed description and the accompanying drawings.

The present invention provides an injection means connected to a stem of an aerosol container, a cover body that covers the injection means and is fixed to the upper part of the container, a trigger that is pressed down on the injection means, and a cover body via a leaf spring portion In the aerosol container provided with the operating means connected to the rear side, by fitting the insertion part of the locking means in the gap generated between the rear part of the injection means and the cover body by opening the leaf spring part , The injection means is fixed at the residual gas discharge position. Therefore, it is possible to discharge all of the propellant (gas) remaining in the aerosol container while maintaining the pressed state of the injection means. Moreover, since the pressing state of the injection means is released when the lock means is removed, the effect of preventing the exhaustion of the entire residual gas (or contents) due to an erroneous operation can be obtained.

  Hereinafter, the best mode for carrying out the present invention will be described in detail based on examples.

  First, Embodiment 1 of the present invention will be described with reference to FIGS. 1 and 2 (A-1) to (A-3). 1 (A), (B), (D), and (E) are external perspective views of the present embodiment, and FIG. 1 (C) is a view of the present embodiment as viewed from the back side. FIGS. 2A-1 to 2A-3 illustrate the operation of this embodiment. As shown in these drawings, the residual gas discharge structure 10 for the aerosol container of the present embodiment is disposed on the inner side of the cover body 20 that is attached to the edge of the mounting cup 14 of the aerosol container 12. The injection unit 50 connected to the stem 16 protruding from the mounting cup 14, the operation unit 60 for operating the injection unit 50, and the lock pin 40 for maintaining the residual gas discharge state. Yes. The aerosol container 12 is filled with a target component to be injected and a gas which is a propellant thereof. In the following description, both of them are included. The residual gas discharge state is the same as the normal content injection state in terms of operation, but refers to a state after the target component is substantially discharged from the aerosol container. In this embodiment, the lock pin 40 including the shaft portion 42 and the head 44 shown in FIG. 1B is used, and the extension nozzle 80 or the lock pin 90 shown in FIG. 1B is used. Examples will be described later.

  First, the cover body 20 is provided with a substantially ring-shaped or cylindrical base portion 22 attached to an edge portion of the mounting cup 14 and a pair of side surfaces 24 and 26 arranged at a predetermined interval. The front surfaces 24A and 26A (the nozzle hole side) of the pair of side surfaces 24 and 26 are open, and an operation unit 60 described later can be inserted therefrom. In addition, slits 28 and 30 having a predetermined length in a substantially horizontal direction are formed below the side surfaces 24 and 26 from the front surfaces 24A and 26A toward the rear portion 32. The slits 28 and 30 pass through the side surfaces 24 and 26 in a direction substantially orthogonal to each other, and are set to dimensions that allow the shaft portion 42 of the lock pin 40 to be inserted. Further, as shown in FIG. 1 (C), an opening 34 for inserting a distal end of an operation unit 60 (to be described later) into a position slightly ahead of the rear portion 32 inside the pair of side surfaces 24, 26. A base 33 having 36 is provided in a substantially vertical direction. The upper end of the base portion 33 is continuous with the rear front surface 32A of the cover body 20 so as to form a step. Further, a receiving portion 38 that detachably holds the shaft portion 42 of the lock pin 40 is formed in the rear portion 32 of the cover body 20 in a substantially vertical direction.

  Next, the injection unit 50 includes a stem mounting part 52 for mounting on the stem 16 and an injection port 54 for injecting the contents of the aerosol container 12 toward the outside. A passage 55 for the contents connecting the two is formed in a substantially L shape. The nozzle 54 protrudes from the front surfaces 24A and 26A of the cover body 20 to the outside. Moreover, the rear part 56 of the injection part 50 is connected to the base parts 22 and 33 of the said cover body 20 via the leaf | plate spring part 58, as shown to FIG. 2 (A-1)-(A-3). . For this reason, the injection part 50 can swing up and down as a whole with the connecting portion with the cover body 20 as a fulcrum by the action of the leaf spring part 58, and presses the stem 16 via the stem mounting part 52. Then, the valve mechanism (not shown) can be opened to discharge (inject) the contents of the aerosol container 12. In the present embodiment, the injection unit 50 and the cover body 20 are integrally formed.

  Next, the operation unit 60 includes a holding unit 62 that holds the vicinity of the injection hole 54 of the injection unit 50, a pair of guards 68 and 70, and a trigger 72 that is operated by a finger. A stopper piece 64 connected by a connecting part 66 is provided at the upper end of the holding part 62. The stopper piece 64 is formed in a shape and size that can be engaged with the upper ends 24B, 26B of the pair of side surfaces 24, 26 of the cover body 20. Then, in a state where the vicinity of the nozzle hole 54 is held by the holding portion 62, the injection piece 50 is brought into a state in which the contents cannot be discharged (initial state) by engaging the stopper piece 64 with the upper ends 24B and 26B. (See FIG. 2A-1). Further, the pair of guards 68 and 70 are arranged so as to sandwich the stem mounting portion 52 of the injection unit 50, a trigger 72 is provided on the front side thereof, and slits 74 and 70 are provided on the other end side, respectively. 76 (slit 74 is not shown) and claws 68A and 70A are formed. Further, in the vicinity of the boundary between the guards 68, 70 and the trigger 72, a through hole 78 having a substantially oblong cross section is formed in a direction substantially orthogonal to the guards 68, 70. The through-hole 78 is formed at a position that coincides with the slits 28 and 30 of the cover body 20 when the trigger 72 is pulled, and has a dimension that allows the shaft portion 42 of the lock pin 40 to be inserted. Is set.

  When mounting the operation unit 60 having the above-described configuration, first, the cover unit 20 is inserted from the front surfaces 24A and 26A side so that the injection port 54 of the injection unit 50 passes through the holding unit 62. Then, by fitting the claws 68A, 70A into the openings 34, 36 of the base 33 of the cover body 20, they are attached to the cover body 20 and the injection section 50, and the injection section 50 is pressed by operating the trigger 72. can do. The lower limit of the swinging range of the injection unit 50 is until the inclined portion 73 of the trigger 72 comes into contact with the edge 23 of the cover base 22, and the upper limit is that the upper ends of the guards 68 and 70 are on the cover side surface 24. , 26 until it comes into contact with the projections 25, 27 provided inside. The cover body 20, the lock pin 40, the injection part 50, and the operation part 60 which comprise a present Example are formed with well-known materials, such as a plastics, for example.

  Next, the operation of this embodiment will be described. Before using the aerosol container 12 (initial state), as shown in FIG. 2 (A-1), the stopper piece 64 of the operation unit 60 is engaged with the pair of side surface upper ends 24B and 26B of the cover body 20, The stem mounting portion 52 is kept in a state where it does not press the stem 16. When the target component of the aerosol container 12 is jetted, the stopper piece 64 is bent in the direction indicated by the arrow F1 in FIG. 2 (A-1), the connecting portion 66 is bent, and the stopper piece 64 is separated from the holding portion 62. . Then, as shown in FIG. 2 (A-2), the tip of the stem mounting portion 52 covers the stem 16, and the injection portion 50 can be pushed down by pulling the trigger 72 in the arrow F2 direction. When the trigger 72 is pulled, the stem mounting portion 52 pushes down the stem 16, so that the target component is injected from the injection port 54 through the passage 55 by the propellant.

  When the target component is used up by the above-described normal use and the aerosol container 12 is discarded, it is necessary to discharge all residual gas (propellant) in the aerosol container 12 to the outside of the container. At this time, the lock pin 40 is removed from the cover body rear portion 32, and the trigger 72 is pulled as shown in FIGS. 1 (D) and 2 (A-3), so that the through hole 78 of the operation unit 60 and the cover body are pulled. The positions of the 20 slits 28 and 30 are aligned, and the shaft portion 42 of the lock pin 40 is inserted in the direction indicated by the arrow F3. Then, since the shaft portion 42 engages with the slits 28 and 30 and the through hole 78, as shown in FIG. 1 (E), the injection portion 50 can be kept (locked) in the residual gas discharge state. When all the residual gas is discharged, the aerosol container 12 is discarded by an appropriate method. Even if not only the propellant but also the target component remains in the aerosol container 12, the target component and the residual gas are all discharged by the above-described operation. Since the pin 40 can be removed from the slits 28 and 30 and the through-hole 78, the lock can be easily released even if the residual gas is accidentally set to the exhaust state. Further, even if the residual component is accidentally changed to the residual gas discharge state with the target component remaining, the normal use state shown in FIG. 2 (A-2) can be restored by removing the pin 40. it can.

Thus, according to the first embodiment, there are the following effects.
(1) The through hole 78 of the operation unit 60 attached to the injection unit 50 and the slits 28 and 30 of the cover body 20 are formed so as to be aligned when the injection unit 50 is in a residual gas discharge state. The shaft portion 42 of the lock pin 40 is inserted into and engaged therewith. For this reason, it is possible to prevent the trigger 72 from returning, maintain the residual gas discharge state, and easily discharge the residual gas.
(2) Since the injection unit 50 cannot be locked unless the lock pin 40 is used, an erroneous operation is unlikely to occur.
(3) Since the lock pin 40 can be removed from the slits 28 and 30 and the through-hole 78, even when the lock pin 40 is mistakenly inserted, it is possible to easily return from the locked state.

  Next, a modification of the present embodiment will be described with reference to FIGS. 1 (B) and 2 (B). In this modification, an extension nozzle 80 shown in FIG. 1B is used instead of the lock pin 40. The extension nozzle 80 is a small-diameter cylindrical body that is detachably connected to the injection port 54 of the injection unit 50 and is usually set as an accessory of the aerosol container 12 in many cases. When such an extension nozzle 80 is used as a lock member and the injection unit 50 is in a residual gas discharge state, it is engaged through the slits 28 and 30 and the through hole 78 as shown in FIG. As a result, the same effects as those of the first embodiment can be obtained. In addition, according to the present modification, the use of the extension nozzle 80 enables effective use of components.

  Next, Embodiment 2 of the present invention will be described with reference to FIGS. 1 (B), 2 (C-1) and 2 (C-2). In addition, the same code | symbol shall be used for the component which is the same as that of Example 1 mentioned above, or respond | corresponds. The present embodiment shows another form of the lock pin, and the cover body 20 and the jet are not provided except that the slits 28 and 30 of the cover body 20 and the through hole 78 of the operation portion 60 are not provided. The configurations of the unit 50 and the operation unit 60 are basically the same as those in the first embodiment. The lock pin 90 of the present embodiment is formed by a head portion 94 having a shaft portion 92 that can be held by the receiving portion 38 of the cover body 20 and a groove 96 that can be engaged with the rear front surface 32A of the cover body 20. ing. When the aerosol container 12 is normally used, the lock pin 90 is held by the rear portion 32 of the cover body 20 as shown in FIG. When the injection unit 50 is locked according to the present embodiment, the lock pin 90 is removed from the rear part 32 of the cover body, and as shown in FIG. The head 94 of the lock pin 90 is inserted and locked in a gap 98 formed between the front face 32A of the cover body 20 and the rear face 32A. Also in this case, since the locked state can be released by removing the head 94 from the gap 98, the same effect as in the first embodiment can be obtained.

In addition, this invention is not limited to the Example mentioned above, A various change can be added in the range which does not deviate from the summary of this invention. For example, the following are also included.
(1) The shape, dimensions, and design shown in the above embodiment are examples, and may be appropriately changed as necessary. Similarly, the material can be appropriately changed as necessary.
(2) The slits 28 and 30 shown in the first embodiment are only examples, and if they can be engaged with the lock pin 40 or the extension nozzle 80, they are like through holes that are not open on the front side. Also good.
(3) In the first embodiment, the lock pin 40 or the extension nozzle 80 is made to penetrate all of the slits 28 and 30 and the through hole 78. However, the lock pin 40 or the extension nozzle 80 may be inserted partway through the through hole 78. Further, for example, only one of the slits 28 and 30 is provided, and the operation portion 60 is provided with an engagement hole that does not penetrate in the direction substantially orthogonal to the side surfaces 24 and 26, and either of the slit and the engagement hole is provided. If the cover body 20 and the operation unit 60 can be locked by engagement with the lock pin 40 or the extension nozzle 80, such as inserting a pin through the pin, the design may be changed as necessary.
(4) The maintenance of the initial state by the stopper piece 64 shown in the first embodiment is also an example, and various known initial state maintaining mechanisms may be applied.
(5) Examples of the target component to be sprayed with the aerosol container 12 of the present invention include cosmetic liquids, detergents, paints, deodorants, fragrances, pharmaceuticals, insecticides, and the like. The invention is applicable to all aerosol containers filled with various known target components.

According to the present invention, the injection means connected to the stem of the aerosol container, the cover body covering the injection means and fixed to the upper part of the container, the operation of the injection means and the cover body via the leaf spring portion In the aerosol container provided with the operation means connected to the rear side, the injection portion of the locking means is fitted into a gap generated between the rear portion of the injection means and the cover body by opening the leaf spring part. The means was fixed at the residual gas discharge position. For this reason, it can be applied as a residual gas discharge structure for discharging the entire amount of propellant (gas) remaining in the aerosol container.

It is a figure which shows the residual gas discharge structure of the aerosol container of Example 1 and 2 of this invention. It is a figure which shows the effect | action of this invention, (A-1)-(A-3) is Example 1, (B) is a modification of Example 1, (C-1) and (C-2) are implementation. FIG. 6 is a diagram showing Example 2.

Explanation of symbols

10: Residual gas discharge structure 12: Aerosol container 14: Mounting cup 16: Stem 20: Cover body 22: Base part 23: Edge part 24, 26: Side face 24A, 26A: Front face 24B, 26B: Upper end 25, 27: Projection 28 , 30: slit 32: rear part 32A: rear front part 33: base part 34, 36: opening part 38: receiving part 40: lock pin 42: shaft part 44: head part 50: injection part 52: stem mounting part 54: injection hole 55: Path 56: Rear part 58: Leaf spring part 60: Operation part 62: Holding part 64: Stopper piece 66: Connecting part 68, 70: Guard 68A, 70A: Claw 72: Trigger 73: Inclined part 74, 76: Slit 78: Through Hole 80: Extension nozzle 90: Lock pin 92: Shaft portion 94: Head portion 96: Groove 98: Clearance

Claims (2)

A cover body fixed to the upper part of the aerosol container and having a pair of opposing side surfaces;
Together are arranged between a pair of side surfaces of the cover body, are connected via a leaf spring portion against the rear side of the cover body, a swingable connection of its fulcrum, the aerosol Injection means for injecting the contents of the container;
Operating means attached to the cover body and the ejecting means and having a trigger for depressing the ejecting means;
A shaft portion that is detachably held by a receiving portion provided in the cover body, and an insert that can be inserted into a gap generated between the rear portion of the injection means at the discharge position of the residual gas in the aerosol container and the cover body. Locking means having a fitting portion,
The equipped Rutotomoni,
The residual gas discharge structure of an aerosol container, wherein the gap is a portion where the leaf spring portion is opened . In the operating means,
A stopper that engages with upper edges of a pair of side surfaces of the cover body and fixes the ejection means in a state where the contents cannot be discharged;
Residual gas discharge structure of an aerosol container according to claim 1 Symbol mounting, characterized in that the provided.

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